CVE-2018-15784
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedDell Networking OS10 versions prior to 10.4.3.0 contain a vulnerability in the Phone Home feature which does not properly validate the server's certificate authority during TLS handshake. Use of an invalid or malicious certificate could potentially allow an attacker to spoof a trusted entity by using a man-in-the-middle (MITM) attack.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · high confidenceDell Networking OS10 versions prior to 10.4.3.0 contain a vulnerability in the Phone Home feature where the TLS handshake does not properly validate the server's certificate authority. This allows an attacker performing a man-in-the-middle attack to spoof a trusted entity by presenting a malicious or invalid certificate.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.
NVD · CPE data< 10.4.3.0CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Network
- Complexity
- High
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- None
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Determine the installed Dell Networking OS10 versionExecute the 'show version' command on the OS10 switch CLI to retrieve the firmware versionAffected if The displayed version is earlier than 10.4.3.0 (for example, 10.4.2.0, 10.4.1.0, etc.)
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Verify if the Phone Home feature is configuredExecute the 'show phone-home' or 'show running-configuration | grep phone-home' command to see if Phone Home is enabledAffected if Phone Home is enabled and the switch is configured to connect to Dell or third-party phone-home servers
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Check the Phone Home server connection statusUse 'show phone-home detail' or equivalent command to view the current Phone Home connection and certificate statusAffected if The Phone Home feature is actively attempting or has attempted to establish a TLS connection to a remote server
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Confirm TLS certificate validation configurationInspect the Phone Home configuration using 'show running-configuration' and look for certificate-related settings or trust-point configurationAffected if Certificate validation is either disabled, misconfigured, or using default/trusted settings that do not properly verify the server CA chain
The environment is affected if the installed OS10 version is earlier than 10.4.3.0 AND the Phone Home feature is enabled and actively used.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
From vendor data10.4.3.0
Upgrade Dell Networking OS10 to version 10.4.3.0 or later to remediate this vulnerability. Until upgraded, avoid using the Phone Home feature on untrusted networks or implement additional network-level controls to prevent MITM attacks.
- Consultation4.0 h
- Implementation8.0 h
- Testing4.0 h
- Review / QA3.0 h
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Free · runs locallyCheck whether your project pulls in CVE-2018-15784 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2018-15784 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
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